I was recently doing some work to diagnose the running issue on the Model A, as part of this I was applying some extra heat protection for the fuel system.
To my horror I noticed that the recently installed nitrile fuel line had begun to show significant cracking which of course could result in a fire risk if the cracks got bad enough
After some research and the verdict is don’t use nitrile fuel line with ethanol!
This hose has now been swapped out for Gates 3225 fuel line across the board The Gates line is much better quality as you can see.
Let’s see how it goes